The NOAA Space Weather Prediction Center has issued an alert for a possible G4 or greater solar storm. It may occur sometime later today (10 May 24) This is the first G4 watch issued by NOAA Space Weather in over 20 years. Alerts, Watches and Warnings | NOAA / NWS Space Weather Prediction Center
Here are the solar scales describing the effects of the different storm levels: NOAA Space Weather Scales | NOAA / NWS Space Weather Prediction Center
If it occurs, expect HF radio blackouts and auroras seen further south than usual.
Here are the solar scales describing the effects of the different storm levels: NOAA Space Weather Scales | NOAA / NWS Space Weather Prediction Center
If it occurs, expect HF radio blackouts and auroras seen further south than usual.